diff -Nru linux-2.4.16/include/asm-mips/hardirq.h.orig linux-2.4.16/include/asm-mips/hardirq.h
--- linux-2.4.16/include/asm-mips/hardirq.h.orig	Sun Sep  9 10:43:01 2001
+++ linux-2.4.16/include/asm-mips/hardirq.h	Tue Dec  4 16:14:02 2001
@@ -43,6 +43,8 @@
 
 #define synchronize_irq()	barrier();
 
+#define release_irqlock(cpu)	do { } while (0)
+
 #else
 
 #include <asm/atomic.h>
diff -Nru linux-2.4.16/arch/mips/ddb5xxx/ddb5477/debug.c.orig linux-2.4.16/arch/mips/ddb5xxx/ddb5477/debug.c
--- linux-2.4.16/arch/mips/ddb5xxx/ddb5477/debug.c.orig	Tue Oct  9 11:11:41 2001
+++ linux-2.4.16/arch/mips/ddb5xxx/ddb5477/debug.c	Tue Dec  4 16:04:45 2001
@@ -15,8 +15,6 @@
  */
 
 #include <linux/kernel.h>
-#include <linux/interrupt.h>
-#include <linux/signal.h>		/* SA_INTERRUPT */
 
 #include <asm/mipsregs.h>
 #include <asm/ddb5xxx/ddb5xxx.h>